1
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Kitagawa Y, Nakai T, Hosoya S, Shoji S, Hasegawa Y. Luminescent Lanthanide Complexes for Effective Oxygen-Sensing and Singlet Oxygen Generation. Chempluschem 2023:e202200445. [PMID: 36756816 DOI: 10.1002/cplu.202200445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 01/25/2023] [Indexed: 02/10/2023]
Abstract
Oxygen quantification using luminescence has attracted considerable attention in various fields, including environmental monitoring and clinical analysis. Among the reported luminophores, trivalent lanthanide complexes have displayed characteristic narrow emission bands with high brightness. This bright emission is based on photo-sensitized energy transfer via organic triplet states. The organic triplet states in lanthanide complexes effectively react with the triplet oxygen, enabling oxygen quantification by lanthanide luminescence. Some TbIII and EuIII complexes with slow deactivation processes have also formed the excited state equilibrium, thus resulting in the emission-lifetime based oxygen sensing property. The combination of TbIII /EuIII emission, EuIII /SmIII emission, EuIII /ligand phosphorescence, and ligand fluorescence/ligand phosphorescence provide the ratiometric oxygen-sensing properties. Moreover, the reaction generates singlet oxygen species which exhibit numerous applications in the photo-medical field. The ligands with large π-conjugated aromatic systems, such as porphyrin, phthalocyanine, and polyaromatic compounds, induces highly efficient oxygen generation. The combination of effective luminescence with singlet-oxygen generation by the lanthanide complexes render them suitable for photo-driven theranostics. This review summarizes the research progress of lanthanide complexes with efficient oxygen-sensing and singlet-oxygen generation properties.
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Affiliation(s)
- Yuichi Kitagawa
- Faculty of Engineering, Hokkaido University Kita 13, Nishi 8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan.,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University Kita 21, Nishi 10, Kita-ku, Sapporo, Hokkaido, 001-0021, Japan
| | - Takuma Nakai
- Graduate School of Chemical Sciences and Engineering, Hokkaido University Kita 13, Nishi 8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
| | - Shota Hosoya
- Graduate School of Chemical Sciences and Engineering, Hokkaido University Kita 13, Nishi 8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
| | - Sunao Shoji
- Faculty of Engineering, Hokkaido University Kita 13, Nishi 8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan.,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University Kita 21, Nishi 10, Kita-ku, Sapporo, Hokkaido, 001-0021, Japan
| | - Yasuchika Hasegawa
- Faculty of Engineering, Hokkaido University Kita 13, Nishi 8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan.,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University Kita 21, Nishi 10, Kita-ku, Sapporo, Hokkaido, 001-0021, Japan
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2
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Fujii T, Kitagawa Y, Hasegawa Y, Imoto H, Naka K. Emission Properties of Eu(III) Complexes Containing Arsine and Phosphine Ligands with Annulated Structures. Inorg Chem 2022; 61:17662-17672. [DOI: 10.1021/acs.inorgchem.2c02757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Toshiki Fujii
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto606-8585, Japan
| | - Yuichi Kitagawa
- Faculty of Engineering and Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido060-8628, Japan
| | - Yasuchika Hasegawa
- Faculty of Engineering and Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido060-8628, Japan
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto606-8585, Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto606-8585, Japan
- Materials Innovation Lab, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto606-8585, Japan
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3
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Rousset E, Piccardo M, Gable RW, Massi M, Sorace L, Soncini A, Boskovic C. Elucidation of LMCT Excited States for Lanthanoid Complexes: A Theoretical and Solid-State Experimental Framework. Inorg Chem 2022; 61:14004-14018. [PMID: 35998349 DOI: 10.1021/acs.inorgchem.2c01985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Photophysical and magnetic properties arising from both ground and excited states of lanthanoid ions are relevant for numerous applications. These properties can be substantially affected, both adversely and beneficially, by ligand-to-metal charge-transfer (LMCT) states. However, probing LMCT states remains a significant challenge in f-block chemistry, particularly in the solid state. Intriguingly, the europium compounds [EuIII(18-c-6)(X4Cat)(NO3)]·MeCN (18-c-6 = 18-crown-6; X = Cl (tetrachlorocatecholate, 1-Eu) or Br (tetrabromocatecholate, 2-Eu) are distinctly darkly-colored, in marked contrast to the analogues with other lanthanoid ions in the 1-Ln and 2-Ln series (Ln = La, Ce, Nd, Gd, Tb, and Dy). Herein, we report a multi-technique investigation of these compounds that has allowed elucidation of the LMCT character of the relevant absorption bands using magnetometry, absorption and emission spectroscopies, and solid-state electrochemistry. To support experimental observations, we present a semi-quantitative multireference ab initio model that (i) captures the anomalously low-lying LMCT excited state observed in the visible spectrum of 1-Eu (and its absence in the other 1-Ln analogues); (ii) elucidates the contribution of the LMCT excitation to the crystal field split 7FJ ground-state wave functions; and (iii) identifies the crucial role played by radial dynamical correlation of the EuIII 4f electrons in the description of the LMCT excited state, modeled by the inclusion of 4f → 5f excitations in the optimized wave function. By providing a set of experimental and theoretical tools, this work establishes a framework for the elucidation of LMCT excited states in lanthanoid compounds in the solid state.
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Affiliation(s)
- Elodie Rousset
- School of Chemistry, University of Melbourne, Parkville, VIC 3010, Australia
| | - Matteo Piccardo
- School of Chemistry, University of Melbourne, Parkville, VIC 3010, Australia
| | - Robert W Gable
- School of Chemistry, University of Melbourne, Parkville, VIC 3010, Australia
| | - Massimiliano Massi
- School of Molecular and Life Sciences─Curtin Institute for Functional Materials and Interfaces, Curtin University, Kent Street, Bentley, WA 6102, Australia
| | - Lorenzo Sorace
- UdR INSTM and Department of Chemistry "U. Schiff", University of Florence, Sesto Fiorentino, FI 50019, Italy
| | - Alessandro Soncini
- School of Chemistry, University of Melbourne, Parkville, VIC 3010, Australia
| | - Colette Boskovic
- School of Chemistry, University of Melbourne, Parkville, VIC 3010, Australia
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4
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Uğurlu M, Akkuş T, Demir L. Determination of L X-ray fluorescence cross-sections in the atomic range of elements 57 ≤ Z ≤ 69 in an external magnetic field. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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5
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Fujii T, Kitagawa Y, Hasegawa Y, Imoto H, Naka K. Drastic Enhancement of Photosensitized Energy Transfer Efficiency of a Eu(III) Complex Driven by Arsenic. Inorg Chem 2021; 60:8605-8612. [PMID: 34087071 DOI: 10.1021/acs.inorgchem.1c00577] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this study, we focused on arsenic as a new potential motif for the ligand design of high-efficiency, luminous lanthanide complexes. A Eu3+ complex bearing triphenylarsine oxide had a photosensitized energy-transfer efficiency 7.9 times higher than that of a Eu3+ complex bearing triphenylphosphine oxide. This is mainly due to the heavy-atom effect of arsenic, which was supported by evaluating the photoluminescence spectra of their corresponding Gd3+ complexes.
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Affiliation(s)
- Toshiki Fujii
- Faculty of Molecular Chemistry and Engineering and Materials Innovation Lab, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Yuichi Kitagawa
- Faculty of Engineering and Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Yasuchika Hasegawa
- Faculty of Engineering and Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering and Materials Innovation Lab, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering and Materials Innovation Lab, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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6
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Aoyagi N, Nguyen TT, Kumagai Y, Nguyen TV, Nakada M, Segawa Y, Nguyen HT, Ba Le T. Spectroscopic Studies of Mössbauer, Infrared, and Laser-Induced Luminescence for Classifying Rare-Earth Minerals Enriched in Iron-Rich Deposits. ACS OMEGA 2020; 5:7096-7105. [PMID: 32280850 PMCID: PMC7143416 DOI: 10.1021/acsomega.9b03247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 03/12/2020] [Indexed: 05/31/2023]
Abstract
Rare-earth (RE) phosphates often appear as an accessory phase in igneous or metamorphic rocks; however, these rocks are composed of myriad chemical elements and nuclides that interfere with the qualitative or quantitative analyses of the RE phosphates over a range of concentrations in the absence of a pretreatment. In addition, the limit of each analytical methodology constrains the approach as well as the usefulness of the results in geoscience applications. Here, we report the specific mineral characterization of RE-containing ores from Yen Phu mine, Vietnam, using a range of state-of-the-art spectroscopic techniques in conjunction with microscopy: Mössbauer spectroscopy, infrared microspectroscopy, time-resolved laser-induced fluorescence spectroscopy (TRLFS), and scanning electron microscopy with energy-dispersive X-ray spectroscopy. Because the distribution of each element in the deposit differs, such combinatorial works are necessary and could lead to more plausible answers to questions surrounding the point of origin of RE elements. The results of our Mössbauer spectroscopic analysis indicate that the three ores sampled at different locations all contain magnetite-like, hematite-like, and iron(III) salts other than hematite. In addition, we confirmed the presence of phosphate around the grain boundary in the magnetite-like mineral phase by infrared microspectroscopic analysis. The present analytical findings of trace amounts of europium(III) using TRLFS suggest that the europium ions generate identical luminescence spectra despite being embedded in three different matrices of iron minerals. This demonstration highlights the benefits of combinatorial spectroscopic analyses to gain insights into the effects of the environment of REs on their solid-state chemistry and shows the potential utility of TRLFS as a resource mining tool. Further applications of this approach in the analytical screening of rocks and minerals are feasible.
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Affiliation(s)
- Noboru Aoyagi
- Advanced
Science Research Center, Japan Atomic Energy
Agency (JAEA), 2-4 Shirakata,
Tokai-mura Naka-gun, Ibaraki 319-1195, Japan
| | - Thuy T. Nguyen
- Institute
for Technology of Radioactive and Rare Elements (ITRRE) VINATOM-MOST, 48 Lang Ha, Dong Da, Hanoi 94027, Vietnam
| | - Yuta Kumagai
- Nuclear
Science and Engineering Center, JAEA, 2-4 Shirakata, Tokai-mura Naka-gun, Ibaraki 319-1195, Japan
| | - Tung V. Nguyen
- Institute
for Technology of Radioactive and Rare Elements (ITRRE) VINATOM-MOST, 48 Lang Ha, Dong Da, Hanoi 94027, Vietnam
| | - Masami Nakada
- Nuclear
Science and Engineering Center, JAEA, 2-4 Shirakata, Tokai-mura Naka-gun, Ibaraki 319-1195, Japan
| | - Yukari Segawa
- Nuclear
Science and Engineering Center, JAEA, 2-4 Shirakata, Tokai-mura Naka-gun, Ibaraki 319-1195, Japan
| | - Hung T. Nguyen
- Institute
for Technology of Radioactive and Rare Elements (ITRRE) VINATOM-MOST, 48 Lang Ha, Dong Da, Hanoi 94027, Vietnam
| | - Thuan Ba Le
- Institute
for Technology of Radioactive and Rare Elements (ITRRE) VINATOM-MOST, 48 Lang Ha, Dong Da, Hanoi 94027, Vietnam
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7
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Kashimura T, Yabushita S. Importance of the Parallel Component of the Transition Moments to the 1Π 1 (5A') and 3Π 1 (3A') Excited States of ICN in the Ã-Band Photodissociation. J Phys Chem A 2019; 123:4000-4013. [PMID: 30990688 DOI: 10.1021/acs.jpca.9b01127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
ICN is one of the few simple triatomic molecules whose photodissociation mechanisms have been thoroughly investigated. Since it has a linear structure in the electronic ground state, the dissociation follows a photoexcitation at a linear or slightly bent structure. It is generally believed that the Ã-band consists of the dominant excitation to 3Π0+ (4A') with the transition dipole moment (TDM) parallel to the molecular axis ( z), a slightly weaker transition to 1Π1 (5A', 4A″), and a much weaker transition to 3Π1 (3A', 2A″), both of the latter two having perpendicular TDMs. In the present work, we have theoretically studied the geometry dependence of these TDMs and found a pronounced θ (bending angle) dependence in the parallel ( z) component of the TDMs to 1Π1 (5A') and 3Π1 (3A'), both of which should be zero at a linear geometry by symmetry and thus have been previously ignored. We estimated that the z component TDM to 1Π1 (5A') has a contribution of 15-20% to the total absorption cross-section at 249 nm at room temperature. Interestingly, the TDM to 3Π0+ (4A') does not exhibit such θ dependency and thus has only the z component. We compare the TDMs of ICN and CH3I molecules having similar excited states. The fact that all the TDMs to 3A', 4A', and 5A' have nonnegligible z components implies the importance of the coherent excitation contributions to various observables of CN fragment, such as the anisotropy parameter, the orientation parameter, and the rotational level distribution as well as the rotational fine structure level distribution.
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Affiliation(s)
- Tatsuhiko Kashimura
- Department of Chemistry, Faculty of Science and Technology , Keio University , 3-14-1 Hiyoshi, Kohoku-ku , Yokohama 223-8522 , Japan
| | - Satoshi Yabushita
- Department of Chemistry, Faculty of Science and Technology , Keio University , 3-14-1 Hiyoshi, Kohoku-ku , Yokohama 223-8522 , Japan
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8
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Janicki R, Kędziorski A, Mondry A. Experimental andAb InitioStudy on the Intensitiesof f-f Transitions for the Molecular Eu(III)-DOTP System. ChemistrySelect 2019. [DOI: 10.1002/slct.201803182] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Rafał Janicki
- Faculty of Chemistry; University of Wrocław; F. Joliot-Curie 14 50-383 Wrocław Poland
| | - Andrzej Kędziorski
- Institute of Physics; Faculty of Physics; Astronomy and Informatics, Nicolaus Copernicus University; Grudziądzka 5 87-100 Toruń Poland
| | - Anna Mondry
- Faculty of Chemistry; University of Wrocław; F. Joliot-Curie 14 50-383 Wrocław Poland
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9
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Hatanaka M, Wakabayashi T. Theoretical study of lanthanide-based in vivo luminescent probes for detecting hydrogen peroxide. J Comput Chem 2019; 40:500-506. [PMID: 30414197 DOI: 10.1002/jcc.25737] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Revised: 09/27/2018] [Accepted: 09/28/2018] [Indexed: 11/06/2022]
Abstract
The 4f-4f emissions from lanthanide trication (Ln3+ ) complexes are widely used in bioimaging probes. The emission intensity from Ln3+ depends on the surroundings, and thus, the design of appropriate photo-antenna ligands is indispensable. In this study, we focus on two probes for detecting hydrogen peroxide, for which emission intensities from Tb3+ are enhanced chemo-selectively by the H2 O2 -mediated oxidation of ligands. To understand the mechanism, the Gibbs free energy profiles of the ground and excited states related to emission and quenching are computed by combining our approximation-called the energy shift method-and density functional theory. The different emission intensities are mainly attributed to different activation barriers for excitation energy transfer from the ligand-centered triplet (T1) to the Tb3+ -centered excited state. Additionally, quenching from T1 to the ground state via intersystem crossing was inhibited by intramolecular hydrogen bonds only in the highly emissive Tb3+ complexes. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Miho Hatanaka
- Institute for Research Initiatives, Division for Research Strategy, Graduate School of Science and Technology, Data Science Center, Nara Institute of Science and Technology, Nara, 630-0192, Japan.,PRESTO, Japan Science and Technology Agency (JST), Saitama, 332-0012, Japan
| | - Tomonari Wakabayashi
- Graduate School of Science and Engineering, Kindai University, Osaka, 577-8502, Japan
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10
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Kang M, Santoro EG, Kang YS. Enhanced Efficiency of Functional Smart Window with Solar Wavelength Conversion Phosphor-Photochromic Hybrid Film. ACS OMEGA 2018; 3:9505-9512. [PMID: 31459083 PMCID: PMC6645011 DOI: 10.1021/acsomega.8b01091] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 08/08/2018] [Indexed: 06/10/2023]
Abstract
Here, the high sensitivity and enhanced photochromic efficiency of the hybrid film of solar wavelength conversion phosphor and photochromic film for functional smart window have been achieved by fabricating a double-layered hybrid structure of wavelength conversion phosphor and photochromic film. Y2SiO5:Pr3+ phosphor nanoparticles, which upconvert visible light to UV light, were synthesized by simple hydrothermal method. The synthesized Y2SiO5:Pr3+ nanoparticle was coated as layered structured film on photochromic H3PW12O40 film. The Y2SiO5:Pr3+/H3PW12O40 hybrid film showed an enhanced sensitivity and efficiency of photochromic process with solar light irradiation due to the increased UV portion of solar light through upconversion process of visible light by wavelength conversion phosphor layer. The increased UV portion by upconversion process of Y2SiO5:Pr3+ layer through excited-state absorption and energy transfer upconversion process, contributed to an enhancement of coloration rate of photochromic H3PW12O40 film by 7 times with 50 min of 1 sun irradiation due to fast conversion of W6+ state to W5+ state in H3PW12O40 film with 5 times enhanced photochromic sensitivity compared with pristine photochromic film.
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11
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Freidzon AY, Kurbatov IA, Vovna VI. Ab initio calculation of energy levels of trivalent lanthanide ions. Phys Chem Chem Phys 2018; 20:14564-14577. [DOI: 10.1039/c7cp08366a] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A fully ab initio computational scheme employing CASSCF/XMCQDPT2/SO-CASSCF for the absorption and emission spectra of trivalent lanthanide complexes is presented.
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Affiliation(s)
- Alexandra Ya. Freidzon
- Photochemistry Center
- Russian Academy of Sciences
- Moscow
- Russia
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
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12
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Yanagisawa K, Kitagawa Y, Nakanishi T, Akama T, Kobayashi M, Seki T, Fushimi K, Ito H, Taketsugu T, Hasegawa Y. Enhanced Luminescence of Asymmetrical Seven-Coordinate EuIII
Complexes Including LMCT Perturbation. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700815] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Kei Yanagisawa
- Graduate School of Chemical Sciences and Engineering; Hokkaido University; Kita-13 Jo, Nishi-8 Chome, Kita-ku 060-8628 Sapporo Hokkaido Japan
| | - Yuichi Kitagawa
- Faculty of Engineering; Hokkaido University; Kita-13 Jo, Nishi-8 Chome, Kita-ku 060-8628 Sapporo Hokkaido Japan
| | - Takayuki Nakanishi
- Faculty of Engineering; Hokkaido University; Kita-13 Jo, Nishi-8 Chome, Kita-ku 060-8628 Sapporo Hokkaido Japan
| | - Tomoko Akama
- Faculty of Science; Hokkaido University; Kita-10 Jo, Nishi-8 Chome, Kita-ku 060-0810 Sapporo Hokkaido Japan
| | - Masato Kobayashi
- Faculty of Science; Hokkaido University; Kita-10 Jo, Nishi-8 Chome, Kita-ku 060-0810 Sapporo Hokkaido Japan
| | - Tomohiro Seki
- Faculty of Engineering; Hokkaido University; Kita-13 Jo, Nishi-8 Chome, Kita-ku 060-8628 Sapporo Hokkaido Japan
| | - Koji Fushimi
- Faculty of Engineering; Hokkaido University; Kita-13 Jo, Nishi-8 Chome, Kita-ku 060-8628 Sapporo Hokkaido Japan
| | - Hajime Ito
- Faculty of Engineering; Hokkaido University; Kita-13 Jo, Nishi-8 Chome, Kita-ku 060-8628 Sapporo Hokkaido Japan
| | - Tetsuya Taketsugu
- Faculty of Science; Hokkaido University; Kita-10 Jo, Nishi-8 Chome, Kita-ku 060-0810 Sapporo Hokkaido Japan
| | - Yasuchika Hasegawa
- Faculty of Engineering; Hokkaido University; Kita-13 Jo, Nishi-8 Chome, Kita-ku 060-8628 Sapporo Hokkaido Japan
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13
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Kitagawa Y, Ohno R, Nakanishi T, Fushimi K, Hasegawa Y. Solvent-dependent dual-luminescence properties of a europium complex with helical π-conjugated ligands. Photochem Photobiol Sci 2017; 16:683-689. [DOI: 10.1039/c7pp00007c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A europium(iii) complex with a large π-conjugated helical ligand, tris(hexafluoroacetylacetonato)europium(iii)bis((pentahelicenyl)diphenylphosphine oxide) (Eu(hfa)3(HPO)2), exhibits dual luminescence excited at the π–π* transition band.
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Affiliation(s)
| | - Ryohsuke Ohno
- Graduate School of Chemical Sciences and Engineering
- Hokkaido University
- Sapporo
- Japan
| | | | - Koji Fushimi
- Faculty of Engineering
- Hokkaido University
- Sapporo
- Japan
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14
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Matsuoka T, Yabushita S. Quantum Interference Effects Theoretically Found in the Photodissociation Processes of the Second Absorption Bands of ICl and IBr Molecules. J Phys Chem A 2015; 119:9609-20. [DOI: 10.1021/acs.jpca.5b05146] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Takahide Matsuoka
- Department of Chemistry,
Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Satoshi Yabushita
- Department of Chemistry,
Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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15
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Hasegawa Y, Sato N, Hirai Y, Nakanishi T, Kitagawa Y, Kobayashi A, Kato M, Seki T, Ito H, Fushimi K. Enhanced Electric Dipole Transition in Lanthanide Complex with Organometallic Ruthenocene Units. J Phys Chem A 2015; 119:4825-33. [DOI: 10.1021/acs.jpca.5b01809] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Yasuchika Hasegawa
- Faculty of Engineering and §Faculty of Science, Hokkaido University, N13 W8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
| | - Nao Sato
- Faculty of Engineering and §Faculty of Science, Hokkaido University, N13 W8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
| | - Yuichi Hirai
- Faculty of Engineering and §Faculty of Science, Hokkaido University, N13 W8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
| | - Takayuki Nakanishi
- Faculty of Engineering and §Faculty of Science, Hokkaido University, N13 W8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
| | - Yuichi Kitagawa
- Faculty of Engineering and §Faculty of Science, Hokkaido University, N13 W8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
| | - Atsushi Kobayashi
- Faculty of Engineering and §Faculty of Science, Hokkaido University, N13 W8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
| | - Masako Kato
- Faculty of Engineering and §Faculty of Science, Hokkaido University, N13 W8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
| | - Tomohiro Seki
- Faculty of Engineering and §Faculty of Science, Hokkaido University, N13 W8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
| | - Hajime Ito
- Faculty of Engineering and §Faculty of Science, Hokkaido University, N13 W8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
| | - Koji Fushimi
- Faculty of Engineering and §Faculty of Science, Hokkaido University, N13 W8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
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16
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Hernández I, Gillin WP. Organic Chromophores-Based Sensitization of NIR-Emitting Lanthanides. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/b978-0-444-63481-8.00269-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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Hatanaka M, Morokuma K. Exploring the Reaction Coordinates for f–f Emission and Quenching of Lanthanide Complexes – Thermosensitivity of Terbium(III) Luminescence. J Chem Theory Comput 2014; 10:4184-8. [DOI: 10.1021/ct500668n] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Miho Hatanaka
- Fukui Institute for Fundamental
Chemistry, Kyoto University, Kyoto, 606-8103 Kyoto, Japan
| | - Keiji Morokuma
- Fukui Institute for Fundamental
Chemistry, Kyoto University, Kyoto, 606-8103 Kyoto, Japan
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Hatanaka M, Yabushita S. Mechanisms of f–f hypersensitive transition intensities of lanthanide trihalide molecules: a spin–orbit configuration interaction study. Theor Chem Acc 2014. [DOI: 10.1007/s00214-014-1517-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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19
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Greisch JF, Harding ME, Schäfer B, Rotter M, Ruben M, Klopper W, Kappes MM, Schooss D. Substitutional photoluminescence modulation in adducts of a europium chelate with a range of alkali metal cations: a gas-phase study. J Phys Chem A 2013; 118:94-102. [PMID: 24341518 DOI: 10.1021/jp4086624] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We present gas-phase dispersed photoluminescence spectra of europium(III) 9-hydroxyphenalen-1-one (HPLN) complexes forming adducts with alkali metal ions ([Eu(PLN)3M](+) with M = Li, Na, K, Rb, and Cs) confined in a quadrupole ion trap for study. The mass selected alkali metal cation adducts display a split hypersensitive (5)D0 → (7)F2 Eu(3+) emission band. One of the two emission components shows a linear dependence on the radius of the alkali metal cation whereas the other component displays a quadratic dependence thereon. In addition, the relative intensities of both components invert in the same order. The experimental results are interpreted with the support of density functional calculations and Judd-Ofelt theory, yielding also structural information on the isolated [Eu(PLN)3M](+) chromophores.
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Affiliation(s)
- Jean-Francois Greisch
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT) , Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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Jukič M, Đorđević A, Lazarević J, Gobec M, Šmelcerović A, Anderluh M. Antimicrobial activity and cytotoxicity of some 2-amino-5-alkylidene-thiazol-4-ones. Mol Divers 2013; 17:773-80. [PMID: 24062019 DOI: 10.1007/s11030-013-9474-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Accepted: 08/12/2013] [Indexed: 01/12/2023]
Abstract
We report a small, focused library of 30 diverse 2-amino-5-alkylidene-thiazol-4-ones that was assayed in a whole-cell antibacterial screen against a panel of several bacterial strains and a yeast. Most of the compounds exhibited modest to significant antibacterial activity against Pseudomonas aeruginosa, Bacillus subtilis and Staphylococcus aureus, and no activity against Salmonella typhimurium and Escherichia coli. The antibacterial activity depends markedly upon substituents on the thiazol-4-one core, and the most potent compound assayed ([Formula: see text]-4-((2-(4-methylpiperidin-1-yl)-4-oxothiazol-5(4H)-ylidene)methyl)benzonitrile) reached a minimal inhibitory concentration (MIC) value of [Formula: see text] on P. aeruginosa strain. An important feature of the tested compounds is their low influence on cell viability, as determined in a HEK-293 metabolic activity assay. In light of the encouraging in vitro antimicrobial assay results against several bacterial strains, we have generated a pharmacophore model using the Discovery studio 3.0 package (Accelrys Inc., San Diego, USA), which exposed the spatial arrangement of key molecular properties responsible for our observed MIC results. Considering the absence of a defined target and the limitation of the described approach to pool different scaffolds, the calculated pharmacophore model could be used for library enrichment to identify compounds with a thiazolidinone scaffold with improved antimicrobial potency and physico-chemical properties.
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Affiliation(s)
- Marko Jukič
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Ljubljana, Aškerčeva 7, 1000 , Ljubljana, Slovenia
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ZHENG Y, CHEN B, SUN J, CHENG L, ZHONG H, LI X, ZHANG J, TIAN Y, YU T, HUANG L. Composition-dependent optical transitions and 2.0 μm emission properties of Ho3+ in xGeO2-(80–x)TeO2-9.5ZnF2-10NaF-0.5Ho2O3 glasses. J RARE EARTH 2011. [DOI: 10.1016/s1002-0721(10)60570-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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22
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An ab initio study on the f-f hypersensitive transition intensities of lanthanide tribromide molecules. Chem Phys Lett 2011. [DOI: 10.1016/j.cplett.2011.01.077] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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